Add Composer setup for PHP_CodeSniffer + WPCS

Author: bitcryptic-gw

composer.json

@@ -0,0 +1,16 @@
+{
+    "name": "bitcryptic/proxy-aware-https-fix",
+    "require": {
+        "wp-coding-standards/wpcs": "^3.0"
+    },
+    "require-dev": {
+        "dealerdirect/phpcodesniffer-composer-installer": "^1.0",
+        "phpcsstandards/phpcsutils": "^1.0",
+        "squizlabs/php_codesniffer": "^3.7"
+    },
+    "config": {
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true
+        }
+    }
+}